What it is
A list of weak topics is hard to feel; a coloured grid is instant. Retention heatmap turns your revision history into a map — topics down the side, recent weeks across the top, each cell shaded by how well you'd recall that topic now. Cold cells are where knowledge is quietly slipping away.
How it works
Estimate recall
For every topic, how well you'd recall it right now is estimated from your attempts.
Lay out the grid
Topics line the side, recent weeks line the top, forming a full-syllabus map.
Colour each cell
Warm means fresh, cool means fading — cold patches are impossible to miss.
Warm it back up
Revise the coldest cells, and watch the map turn warm as recall recovers.
What you get
Unlock Retention heatmap
Retention heatmap is a Premium feature. Start with a free mock to build your profile — your heatmap is ready to switch on the moment you upgrade. No card needed to begin.
Start Free Test → Log in
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